<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018-04-27
 * Time: 11:28
 */
class WechatMessageCache
{
    static $instance;

    static $list = [];

    private function __construct(){}

    public static function getInstance(){
        if (!self::$instance instanceof self) {
            self::$instance = new self();
        }
        return self::$instance;
    }
}